//import './class/lesson1'
//import './class/lesson2'
//import './class/lesson3'
//import './class/lesson4'
//import './class/lesson6'
// import './class/lesson7'
// import './class/lesson8'
// import './class/lesson9'
// import './class/lesson10'
// import './class/lesson11'
// import './class/lesson12'
// import './class/lesson13'
//import './class/lesson14'
import './class/lesson15'
// import './class/lesson16'
// import './class/lesson17'
//babel默认只转换语法,而不转换新的API,如需使用新的API,
//还需要使用对应的转换插件或者polyfill
import 'babel-polyfill'